Finding the Fourth Proportional to 5,288.72, 7,930.72 and 2,823.08

Step by Step Solution

1. Step 1: Write the proportion equation
   5,288.72 : 7,930.72 = 2,823.08 : x
2. Step 2: Convert to fraction form
   5,288.72/7,930.72 = 2,823.08/x
3. Step 3: Cross multiply
   5,288.72x = 7,930.72 × 2,823.08
4. Step 4: Simplify right side
   5,288.72x = 22,389,057.02
5. Step 5: Solve for x
   x = 22,389,057.02/5,288.72
6. Step 6: Final answer
   x = 4,233.36